Floor cleaning machine



Dec. 3, 1940. F. H', NADIG l 2,223,963 n FLoR -CLEANING MACHINE Filed Dec. l0, 1938 5 Sheets-Sheet l A. I y l 4lav 4 Mwmggm F. H. NADIG y 2,223,963 FLoon lCLEANING MACHINE Filed Dec. 10, 1.938 3 Sheets-Sheet 2 fz 7,6 /ATToR' NETYS.

gNvENToR F. H. NADIG FLOOR CLEANING MACHINE Filed Dec. 1o, 193s 3 sheets-sheet 3 milliard/rr: f. 5425 ,e4 a INVENTOR THe-nels H. .7l/2day BY 2 9, V v ATTORNEYS wrrNEsss-S j 79 Patented l`)ec.'3,11940l y UNITED STATES PATENT OFFICE rLoon'oLEANlNG MACHINE Francis H. Nadg, Philadelphia, Pa. Application neeember 1o, 193s, serien No. 244,957 2 Claims. (CL 141-1) This invention relates to a floor cleaning ma- Fig. 8 is a view in section on the* line 8--8 of chine and has for its object an improved con- Figli; v struction of apparatus which causes liquid to im- Fig. 9 is a plan view partly broken away illuspinge at a highvelocity against the portion of trating the lower blower of the machine and also the oor enclosed or conned by the apparatus illustrating the liquiddistributing tube associ- 5 and then recover the liquidv used for repeated use ated therewith; and then effect 'a drying of the floor space Fig. 10 is a view in section on the line {Q -il of through the medium of air under pressure. Fig. 9;

A primary object of my invention is to provide Fig. 11 is a. plan view of the liquid supply 1 an. apparatus of this character in which, by reachamber with a portion broken away t0 illustrate 1 son of the action of the blower or blowers, the` an inlet port therein;

pressure in the space confined or defined by the Fig. 12 is a view in section on the line i2-i2 machine is rendered lower than the-atmospheric of Fig. 11; 15 pressure outside of the machine so as to prevent Fis. 13 is a fragmentary sectional view through any movement of the liquid under the machine Fig. 1, on the line l-Ii. 15

to the outside thereof. My improved door cleaner is provided with a A further object is to provide in an apparatus base l0 which iS Open at the bottom and is`0f of this character improved means for causing the general Gylindriol Shape but iS formed with an liquid which has been used in the cleaning operintegral angularly shaped nose il. which enation to be returned to the reservoir from which ables the cleaner to readily reach into corners it came' for repeated use. and under articles of furniture and the like. A

A further object is to provide improved means trough i2 of rubber, or other analogous matefor feeding liquid to a rotary distributor which rial. iS Supported on the base and is formed with insures a proper action of the distributor in the a'oor sealing member. Fieldingly engaging the cleaning operation., surface on whichz the device is used and said A further object is tor improve upon the eontrough and floor sealing member deiining a door struction illustrated and described in.Patent No. SDS-Ce t0 be Cleaned- The inner wall Il of the 2,003,216 issued to me on May 28th, 1935, with a trough I2 is inclined throughout the major p0rview to simplicity of operation, economy in mantion 0f its length Providing an inclined Surface ufeeture and economy in space and 'weight of the over which liquid from the floor can be readily apparatus. forced into the trough.

With these and other objects in view the in The base i0 is cast or otherwise formed at its vention consists of certain novel features of contOD with 9- Cylindrical barel I5 which extends struction and combination and arrangement of abUVe and belOW the 120D Woll l5 of the base and parts; au of which will be more fully described in the upper end of this barrel l5 the lower end 85 and pointed out in the claims,v of a motor housing i1' is secured. An electric In the accompanying drawings... motor I1 or other prime mover is located in the Fig. 1 is a view in vertical longitudinal section housing n' and its Vertical driven Shaft '3 iS through my improved machine; located centrally in the barrel I5 and has a cup- 40 Fig. 2 is a view in vertical longitudinal section, like hub 9 ocatd 011 its lower P01'1f011- This 40 the view being taken on the line 2--2 of Fig. 1; hub i9 constitutes an integral part of a sleeve 20 Fig. 3 is a top plan view with portions broken egloix; gzhangu; lgugsiglutmg l open ggftgrrild in section to illustrate details of con communication with the hub through the medb Fig. i is an enlarged 'sectional detail view the the hub, the liquid escaping from the distribuegwzremg taken op the taggered une 4 l, of. tor 'with appreciable force ,lonto the surface being cleaned. v Fig. 5 1s a plan view of an air-directing cham A hcnow disuke or cylindrical liquid Supply 5o ber; a portion of the Same being broken away to chamber 23 is secured in the barrel I5 above the 50 indicate the inlet portin the chamber; hub i9 and said chamber 23 is formed with an Fig 6 1s an end view taken at right angles to annular outlet 24 around the sleeve 2li directing Fig. 5; l the .liquid into the hub I9. The chamber 23 is Fig. 7 is a plan view, partly broken away, showstationary and has an inlet opening 25 in its p eum of perforations 22 so as to receive liquid from 45 ing the upper blower of the machine; v riphery which connects -with an opening 2G (Fig. 5l

' the barrel l5 and to the base 2) in the barrel i 5 abovethe base top I3 and communicating with a coupling 2l, the latter having an upwardly projecting inlet nozzle'28 through the valve, the air being admitted through a port 33. As a meansy of manipulating and I do not wish to be y rapidly revolving distributor the valve I have shown a linkage indicated'generally by the reference character 34, although it isl of course, obvious that other means may be employed.

'A blower 35 is secured around the sleeve 20 above the liquid supply chamber 23 and a second blower 36' is secured around the sleeve 20 below the chamber 23 and a disc 31 is secured in the lower end of the barrel i and has a relatively large central opening 38 around theA distributor 2| forming an air' passage. Both of these blowers 35 and 36 discharge into a header 39, the upper blower discharging' through lower'blower through an opening 4| in the barrel i 5. The header 39 is conned in the base I0 and has a discharge nozzle ,42 disposed horizontally in the lower portion of the trough I 2 and projecting into a pipe angle 43 oi appreciably greater internal diameter thany the external diameter of the nozzle. vertical return pipe 44 conilnedin the reservoir 3U and extending above the liquid level in the latter and discharging against a baille 45 depending from the top of the reservoir. Above the upper blower 35 and secured in the barrel i 5 is a hollow disc-like air-receiving chamber 50 having an lnlet 5i (Flg.`5) at its periphery registering with an opening 5i' and an outlet at its center in open communication with the upper blower 35.

The cleaner is preferably supported on three castor wheels 46, 41 and 48, the castor wheel 43 being located-inside`the base ill and the other two castor wheels located outside of the base. A handle bail 49, is pivotally connected to the base I il and has an operating handle 49' thereon which is grasped by the operator, causing the machine to be moved over the floor in the desired manner. It is, of course, obvious that the exact arrangement of the handle and castor wheels may vary limited in this respect.

the liquid is discharged from the 2| onto the door to dislodge any surface dirt on the floor and deects the same over the inclined wall of trough I i2- and is collected in said trough. 'Ihe action of. the blowers 35 and 39 is to draw air and moisture from the confined space acted on by the distributor and direct the same back to the trough as above explained. This operation of drawing the In operation,

air and moisture from vthe confined space .causes the `pressure in said space to be reduced below atmospheric pressure and thus prevent the liquid from being forced outwardly under the machine. I'hese blowers exert sufficient air pressure on the nozzle 42 to suck the liquid out of the troughand the same or air only opening 40 and the 'Ihepipe angle 43 connects with a above the liquid therein.

.through the apertures in direct it back through the pipe 44 into the reservoir and these operationsare continuous and synchronized during the operation ofthe machine.

Preferably the distributing head 2| is made from a semi-rigid material, such as rubber. This is to prevent damage to the machine in the event the rotating head should strike an obstacle. Also preferably the reservoir 30 is removable to insure easy lling and emptying.

While I have illustrated and described what I 'l believe to be a preferred embodiment of my invention it is obvious that various changes may be made with regard tothe form and arrangement of parts without departing from my invention,`

and hence I do not limit myself to the precise details set forth but consider myself at,liberty to make such changes and alterations as fairly fall withintlie spirit and scope of the -claims.

I claim:

1. A floor cleaner including a casing, a base on the casing having an open lwer end, an annular trough fixed lto the baseopen at the top and having a oorsealing member on its bottom which when on the iioor denes and encloses a lng, a motor in the housing. a shaft on the motor extending downwardly into the base centrally thereof,la rotary liquid distributing head in said base secured to the shaft and rotatable therewith,

-oor cleaning space, a motor housing in the casa liquid reservoir in the casing, said head having communication with said liquid reservoir, said head being positioned vto direct liquid onto the iloor space deilned by the sealing member and deiect the liquid from the oor into the trough,

a pair of blowers on the shaft. a header positioned to receiveA air under` pressure from both of said blowers, and means for receiving air under pressure from said header acting as an atomizer for drawing air and liquid from said annular trough and directing the same into said liquid reservoir 2. A floor cleaning machine including an electric motor provided. with a vertical extending shaft, a sleeve surrounding and rigidly secured to said shaft, said sleeve at its lower end being formed as a cup-shaped hub open at the top and provided with perforations in its sides adjacent the bottom, an annular hollow cone-shaped distributing head securedat its upper end to said hub, .the interior of said head being in continuous communication with the interior of said hub the hub, a' stationary cylindrical hollow member having an inlet open# ing at its periphery, an annular hollow depending portion at the center extending into said hub, a liquid reservoir, tubular means providing communication between opening, a rotary air blower secured-to said sleeve and rotatable therewith positioned to draw air and moisture from lthe space surrounding said distributing head, a'base surrounding but spaced from said head, a trough `around the head adapted to contact with the floor and define a confined space of the-floor from which said blower is adapted to draw air and moisture, a header carried by said base having communicationwith the discharge port of said blower, a nozzle leading from said header and an anglepipe for receiving air and moisture from'said nozzle and guiding the same to a discharge point.

' FRANCIS H. NADIG.

said reservoir and said inlet- 

